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The Cornell Lab of Ornithology builds the eBird global platform for communities and partners around the world to advance data-driven science, education, and conservation.

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Los Penasquitos Lagoon--mouth & beach

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Illustrated Checklist

 Powered by Macaulay Library and eBird
Updated ~54 seconds ago

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233 Species Observed
Species w/ Photos
Species w/ Audio
Species Needing Photos
Species Needing Audio
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Native and Naturalized (232)

  1. Last observed by Dan King on 29 Oct 2020
  2. Last observed by Nicole Desnoyers on 2 Jan 2017
  3. Last observed by Donna Mancuso on 4 Nov 2022
  4. Last observed by Jeffrey Price on 3 Mar 2023
  5. Last observed by Melissa Allen on 10 Apr 2024
  6. Last observed by Dan King on 16 May 2021
  7. Last observed by bo nelson on 6 Apr 2024
  8. Last observed by bo nelson on 6 Apr 2024
  9. Last observed by Sean Lyon on 4 Jan 2024
  10. Last observed by Jay Desgrosellier on 27 Apr 2024
  11. Last observed by Max Leibowitz on 16 Apr 2016
  12. Last observed by Dan King on 15 Apr 2024
  13. Last observed by Jay Desgrosellier on 27 Apr 2024
  14. Last observed by Paul Mulholland on 26 Feb 2024
  15. Last observed by Tim Swain on 3 Apr 2024
  16. Last observed by Donna Mancuso on 1 Mar 2024
  17. Last observed by bo nelson on 6 Apr 2024
  18. Last observed by Michael Heaney on 23 Feb 2017
  19. Last observed by bo nelson on 6 Apr 2024
  20. Last observed by Jay Desgrosellier on 27 Apr 2024
  21. Last observed by Susan Smith on 30 Nov 2018
  22. Last observed by Dan King on 8 Nov 2022
  23. Last observed by Justin Hartsell on 12 May 2023
  24. Last observed by bo nelson on 6 Apr 2024
  25. Last observed by Bridget Spencer on 6 Jan 2022
  26. Last observed by BJ Stacey on 21 Oct 2009
  27. Last observed by Susan Smith on 24 Mar 2012
  28. Last observed by Keith Cronin on 22 Apr 2024
  29. Last observed by bo nelson on 6 Apr 2024
  30. Last observed by Tom Rae on 20 Apr 2023
  31. Last observed by Paul Mulholland on 1 Feb 2024
  32. Last observed by Max Leibowitz on 29 Nov 2023
  33. Last observed by Mike Wittmer on 6 May 2023
  34. Last observed by Dan King on 20 Jan 2024
  35. Last observed by Dan King on 15 Apr 2024
  36. Last observed by Dan King on 6 Apr 2024
  37. Last observed by bo nelson on 6 Apr 2024
  38. Last observed by Jim Throckmorton on 4 Jun 2022
  39. Last observed by Melissa Allen on 10 Apr 2024
  40. Last observed by kas dumroese on 17 Mar 2011
  41. Last observed by Tito Gonzalez on 16 Sep 2016
  42. Last observed by David Trissel on 15 Apr 2024
  43. Last observed by Rich and Lynne Glassford on 15 Jun 2023
  44. Last observed by Goran Stankovic on 4 Jul 2021
  45. Last observed by Dan King on 21 Apr 2024
  46. Last observed by Rod Barbo on 31 Jan 2021
  47. Last observed by Katherine Zhang on 9 May 2022
  48. Last observed by Dan King on 21 Apr 2024
  49. Last observed by Jay Desgrosellier on 12 Mar 2023
  50. Last observed by Stephen Perry on 22 Apr 2019
  51. Last observed by Jack Rothman on 2 Mar 2014
  52. Last observed by Dan King on 21 Apr 2024
  53. Last observed by Jim Throckmorton on 4 Jun 2022
  54. Last observed by Tristan Yoo on 4 Oct 2023
  55. Last observed by Max Leibowitz on 24 Mar 2024
  56. Last observed by Anonymous eBirder on 11 Jan 2024
  57. Last observed by Keith Cronin on 22 Apr 2024
  58. Last observed by Dan King on 6 Apr 2024
  59. Last observed by Seth Greene on 7 Mar 2024
  60. Last observed by Dan King on 15 Apr 2024
  61. Last observed by Jay Desgrosellier on 27 Apr 2024
  62. Last observed by Peter Burke on 3 Mar 2024
  63. Last observed by Paul Mulholland on 30 Mar 2024
  64. Last observed by Jay Desgrosellier on 29 Aug 2021
  65. Last observed by Susan Smith on 17 Sep 2023
  66. Last observed by Max Leibowitz on 21 Aug 2021
  67. Last observed by Jay Desgrosellier on 11 Sep 2022
  68. Last observed by Dan King on 25 Aug 2023
  69. Last observed by Callen Hyland on 18 Aug 2023
  70. Last observed by MaryJane Boland on 7 Sep 1982
  71. Last observed by Robert Turner on 1 Aug 2018
  72. Last observed by David Trissel on 15 Apr 2024
  73. Last observed by Dan King on 6 Apr 2024
  74. Last observed by Don Ross on 1 Apr 2015
  75. Last observed by Nik Byle on 1 Aug 2022
  76. Last observed by Susan Smith on 24 Aug 2022
  77. Last observed by Chris McCreedy - no playbacks on 9 Apr 2007
  78. Last observed by Dan King on 1 Apr 2024
  79. Last observed by Sean Buchanan on 4 Oct 2022
  80. Last observed by Tim Swain on 3 Apr 2024
  81. Last observed by Dan King on 6 Apr 2024
  82. Last observed by Jay Desgrosellier on 19 Sep 2021
  83. Last observed by Paul Mulholland on 26 Feb 2024
  84. Last observed by Dan King on 22 Dec 2023
  85. Last observed by Dan King on 20 Jan 2024
  86. Last observed by Dan King on 20 Jan 2024
  87. Last observed by Max Leibowitz on 16 Jun 2020
  88. Last observed by Max Leibowitz on 20 Dec 2023
  89. Last observed by Geoffrey Rogers on 13 Aug 1989
  90. Last observed by C. Jackson on 7 Apr 2016
  91. Last observed by Max Leibowitz on 24 Mar 2024
  92. Last observed by Alex Abela on 26 Apr 2024
  93. Last observed by Davis Provan on 25 Jan 2024
  94. Last observed by Alex Abela on 26 Apr 2024
  95. Last observed by Susan Smith on 27 Apr 2024
  96. Last observed by Mel Senac on 3 Feb 2024
  97. Last observed by Rhys Marsh on 6 Apr 2024
  98. Last observed by Susan Smith on 27 Apr 2024
  99. Last observed by Susan Smith on 27 Apr 2024
  100. Last observed by Susan Smith on 25 Apr 2016
  101. Last observed by Susan Smith on 27 Apr 2024
  102. Last observed by Tim Swain on 3 Apr 2024
  103. Last observed by Sean Buchanan on 31 Jan 2024
  104. Last observed by Donna Mancuso on 1 Mar 2024
  105. Last observed by Susan Smith on 21 Aug 2023
  106. Last observed by Jay Desgrosellier on 27 Apr 2024
  107. Last observed by Susan Smith on 27 Apr 2024
  108. Last observed by Max Leibowitz on 21 Aug 2023
  109. Last observed by Susan Smith on 27 Apr 2024
  110. Last observed by Susan Smith on 27 Apr 2024
  111. Last observed by Dan King on 15 Apr 2024
  112. Last observed by Dan King on 15 Apr 2024
  113. Last observed by Susan Smith on 27 Apr 2024
  114. Last observed by Max Leibowitz on 16 Jun 2020
  115. Last observed by Max Leibowitz on 21 Aug 2023
  116. Last observed by Max Leibowitz on 21 Aug 2023
  117. Last observed by Dan King on 1 Jan 2023
  118. Last observed by Max Leibowitz on 21 Aug 2023
  119. Last observed by HIROMI HOSAKO on 19 Nov 2023
  120. Last observed by David Trissel on 9 Mar 2023
  121. Last observed by Dan King on 1 Apr 2024
  122. Last observed by Dan King on 10 Sep 2022
  123. Last observed by Max Leibowitz on 29 Nov 2023
  124. Last observed by Dan King on 17 May 2020
  125. Last observed by Jay Desgrosellier on 27 Apr 2024
  126. Last observed by Dan King on 6 Apr 2024
  127. Last observed by Alex Abela on 26 Apr 2024
  128. Last observed by BJ Stacey on 3 Feb 2020
  129. Last observed by Susan Smith on 27 Apr 2024
  130. Last observed by Audrey E. on 15 Nov 2023
  131. Last observed by Susan Smith on 16 Sep 2023
  132. Last observed by Jim Throckmorton on 4 Jun 2022
  133. Last observed by Jay Desgrosellier on 19 Sep 2021
  134. Last observed by Mike Nelson on 6 Dec 2023
  135. Last observed by Susan Smith on 27 Apr 2024
  136. Last observed by Sean Buchanan on 28 Oct 2022
  137. Last observed by Marshall Walthew on 26 Dec 2014
  138. Last observed by Keith Cronin on 22 Apr 2024
  139. Last observed by Dan King on 21 Apr 2024
  140. Last observed by Donna Mancuso on 1 Mar 2024
  141. Last observed by Pema Zonglo on 12 Jan 2024
  142. Last observed by Susan Smith on 27 Apr 2024
  143. Last observed by Larry Winberry on 6 Oct 2021
  144. Last observed by Kevin Murphy on 10 Oct 2023
  145. Last observed by Anonymous eBirder on 2 Nov 2022
  146. Last observed by Donna Mancuso on 3 Mar 2023
  147. Last observed by Chris Roberts on 29 Feb 2024
  148. Last observed by bo nelson on 6 Apr 2024
  149. Last observed by CK Staurovsky on 30 Dec 2006
  150. Last observed by Susan Smith on 6 Aug 2000
  151. Last observed by Susan Smith on 21 Feb 2024
  152. Last observed by Sky Kardell on 18 Apr 2017
  153. Last observed by Dan King on 21 Apr 2024
  154. Last observed by Jay Desgrosellier on 27 Feb 2021
  155. Last observed by Sally Veach on 23 Jan 2024
  156. Last observed by Eve Martin on 21 Feb 2024
  157. Last observed by Dan King on 21 Apr 2024
  158. Last observed by Jeff Bogan on 2 May 2022
  159. Last observed by Kat Byrd on 11 May 2021
  160. Last observed by Alexander Feinberg on 19 Apr 2023
  161. Last observed by Melissa Allen on 10 Apr 2024
  162. Last observed by Max Leibowitz on 12 Mar 2024
  163. Last observed by Beatriz Hernandez on 22 May 2023
  164. Last observed by Melissa Allen on 10 Apr 2024
  165. Last observed by Nancy Richardson on 7 Apr 2023
  166. Last observed by Navin and Cherie Rao on 14 Apr 2023
  167. Last observed by Navin and Cherie Rao on 14 Apr 2023
  168. Last observed by Rachel Yingling on 8 Oct 2021
  169. Last observed by Donna Mancuso on 1 Mar 2024
  170. Last observed by Keith Cronin on 22 Apr 2024
  171. Last observed by Susan Smith on 27 Apr 2024
  172. Last observed by Alvin Walter on 24 Nov 2020
  173. Last observed by Jay Desgrosellier on 5 Sep 2021
  174. Last observed by Sean Buchanan on 21 Feb 2024
  175. Last observed by Dan King on 15 Apr 2024
  176. Last observed by Keith Cronin on 22 Apr 2024
  177. Last observed by David Trissel on 15 Apr 2024
  178. Last observed by David Trissel on 15 Apr 2024
  179. Last observed by Dan King on 21 Apr 2024
  180. Last observed by Dan King on 21 Apr 2024
  181. Last observed by Paul Braford on 15 Jan 2024
  182. Last observed by Melissa Allen on 14 Dec 2023
  183. Last observed by Jacob Langford on 25 Jan 2024
  184. Last observed by Nick Barber on 7 Mar 2021
  185. Last observed by Dan King on 1 Apr 2024
  186. Last observed by Michael Schramm on 15 Apr 2022
  187. Last observed by Susan Smith on 5 Apr 2024
  188. Last observed by Jim Throckmorton on 4 Jun 2022
  189. Last observed by Dan King on 21 Apr 2024
  190. Last observed by Susan Smith on 4 Mar 2007
  191. Last observed by Dan King on 21 Apr 2024
  192. Last observed by Matthew Pendleton on 23 Dec 2022
  193. Last observed by Katherine Zhang on 9 May 2022
  194. Last observed by Mike Nelson on 11 Jan 2023
  195. Last observed by Ethan Lai on 16 Jan 2023
  196. Last observed by Mark Kosiewski on 25 Apr 2019
  197. Last observed by Elizabeth Smith on 21 Feb 2023
  198. Last observed by Christine Beck on 25 Oct 2023
  199. Last observed by bo nelson on 6 Apr 2024
  200. Last observed by Paul Mulholland on 14 Nov 2023
  201. Last observed by Keith Cronin on 22 Apr 2024
  202. Last observed by Dan King on 24 May 2021
  203. Last observed by Dan King on 21 Apr 2024
  204. Last observed by Navin and Cherie Rao on 14 Apr 2023
  205. Last observed by Nancy Richardson on 6 Oct 2023
  206. Last observed by bo nelson on 6 Apr 2024
  207. Last observed by Donna Mancuso on 1 Mar 2024
  208. Last observed by Jay Desgrosellier on 27 Apr 2024
  209. Last observed by Jay Desgrosellier on 27 Apr 2024
  210. Last observed by Donna Mancuso on 4 Apr 2024
  211. Last observed by Jay Desgrosellier on 27 Apr 2024
  212. Last observed by Donna Mancuso on 4 Feb 2022
  213. Last observed by Dan King on 21 Apr 2024
  214. Last observed by Jay Desgrosellier on 11 May 2019
  215. Last observed by Donna Mancuso on 4 Apr 2024
  216. Last observed by Donna Mancuso on 7 Jul 2023
  217. Last observed by Kat Byrd on 11 May 2021
  218. Last observed by Navin and Cherie Rao on 14 Apr 2023
  219. Last observed by BJ Stacey on 22 Dec 2010
  220. Last observed by Patrick OHoro on 10 Jun 2021
  221. Last observed by Marshall Walthew on 23 Dec 2021
  222. Last observed by Donna Mancuso on 2 May 2023
  223. Last observed by Dan King on 21 Apr 2024
  224. Last observed by Melissa Allen on 10 Apr 2024
  225. Last observed by Beatriz Hernandez on 22 May 2023
  226. Last observed by Melissa Allen on 10 Apr 2024
  227. Last observed by Navin and Cherie Rao on 14 Apr 2023
  228. Last observed by Max Leibowitz on 13 May 2016
  229. Last observed by Navin and Cherie Rao on 14 Apr 2023
  230. Last observed by Chris Rohrer on 4 Jun 2020
  231. Last observed by Marshall Walthew on 11 Apr 2016
  232. Last observed by Jay Desgrosellier on 24 Apr 2021

Exotic: Provisional (1)

  1. Last observed by Sean Buchanan on 5 Mar 2024

Exotic: Escapee (1)

  1. Last observed by Jim Throckmorton on 4 Jun 2022

Hybrids (3)

  1. Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescens
    Last observed by Max Leibowitz on 19 Feb 2024
  2. Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescens
    Last observed by Sean Buchanan on 13 Feb 2024
  3. Sandwich x Elegant Tern (hybrid) Thalasseus sandvicensis x elegans
    Last observed by Mike Huang on 8 Apr 2016

Additional Taxa (52)

  1. Domestic goose sp. (Domestic type) Anser sp. (Domestic type)
    Last observed by Bryan Flaig on 21 Dec 2023
  2. Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
    Last observed by Jay Desgrosellier on 11 Sep 2022
  3. teal sp. Anatidae sp. (teal sp.)
    Last observed by Susan Smith on 6 Sep 2022
  4. dabbling duck sp. Anatidae sp. (dabbling duck sp.)
    Last observed by Dan King on 13 Oct 2021
  5. Greater/Lesser Scaup Aythya marila/affinis
    Last observed by bo nelson on 6 Apr 2024
  6. scoter sp. Melanitta sp.
    Last observed by Rob Farber on 4 Mar 2024
  7. merganser sp. Mergellus/Lophodytes/Mergus sp.
    Last observed by Brendan Duggan on 30 Jan 2020
  8. duck sp. Anatidae (duck sp.)
    Last observed by Donna Mancuso on 4 Apr 2024
  9. Horned/Eared Grebe Podiceps auritus/nigricollis
    Last observed by Susan Smith on 21 Feb 2024
  10. Western/Clark's Grebe Aechmophorus occidentalis/clarkii
    Last observed by Susan Smith on 5 Apr 2024
  11. pigeon/dove sp. Columbidae sp.
    Last observed by Dan King on 1 Apr 2024
  12. Rufous/Allen's Hummingbird Selasphorus rufus/sasin
    Last observed by bo nelson on 6 Apr 2024
  13. hummingbird sp. Trochilidae sp.
    Last observed by Max Leibowitz on 24 Mar 2024
  14. small plover sp. Charadrius/Anarhynchus sp.
    Last observed by Spenser Epperson on 2 Nov 2018
  15. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    Last observed by Dan King on 4 Oct 2023
  16. Red/Red-necked Phalarope Phalaropus fulicarius/lobatus
    Last observed by Susan Smith on 10 Sep 2022
  17. phalarope sp. Phalaropus sp.
    Last observed by Susan Smith on 9 Sep 2023
  18. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    Last observed by Donna Mancuso on 30 Aug 2021
  19. peep sp. Calidris sp. (peep sp.)
    Last observed by Susan Smith on 5 Apr 2024
  20. Calidris sp. Calidris sp.
    Last observed by Ruslan Balagansky on 16 May 2023
  21. large shorebird sp. Scolopacidae sp. (large shorebird sp.)
    Last observed by Susan Smith on 17 Nov 2023
  22. shorebird sp. Charadriiformes sp.
    Last observed by Dan King on 25 Aug 2023
  23. Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinus
    Last observed by Dan King on 6 Apr 2024
  24. jaeger sp. Stercorarius sp. (jaeger sp.)
    Last observed by Susan Smith on 16 Sep 2023
  25. large alcid sp. Alca/Uria sp.
    Last observed by Philip Henson on 14 Mar 2023
  26. alcid sp. Alcidae sp.
    Last observed by Susan Smith on 6 Feb 2024
  27. Western/Glaucous-winged Gull Larus occidentalis/glaucescens
    Last observed by Sean Buchanan on 2 Feb 2024
  28. Larus sp. Larus sp.
    Last observed by Susan Smith on 5 Apr 2024
  29. gull sp. Larinae sp.
    Last observed by Susan Smith on 27 Apr 2024
  30. Forster's/Common Tern Sterna forsteri/hirundo
    Last observed by Max Leibowitz on 21 Aug 2023
  31. Elegant/Royal Tern Thalasseus elegans/maximus
    Last observed by Susan Smith on 27 Apr 2024
  32. large tern sp. Hydroprogne/Thalasseus sp.
    Last observed by Susan Smith on 21 Feb 2024
  33. tern sp. Sterninae sp.
    Last observed by bo nelson on 6 Apr 2024
  34. loon sp. Gavia sp.
    Last observed by Susan Smith on 22 Mar 2024
  35. storm-petrel sp. Oceanitidae/Hydrobatidae sp.
    Last observed by Susan Smith on 21 Aug 2023
  36. shearwater sp. Procellariidae sp. (shearwater sp.)
    Last observed by Max Leibowitz on 24 Mar 2024
  37. cormorant sp. Phalacrocoracidae sp.
    Last observed by bo nelson on 6 Apr 2024
  38. Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violacea
    Last observed by Susan Smith on 13 May 2021
  39. white egret sp. Egretta/Bubulcus/Ardea sp.
    Last observed by Dawn Martin on 3 Mar 2024
  40. woodpecker sp. Picidae sp.
    Last observed by Niccolo Eck on 27 May 2022
  41. falcon sp. Falco sp.
    Last observed by Stephen Perry on 14 May 2018
  42. diurnal raptor sp. Accipitriformes/Falconiformes sp.
    Last observed by Mayn Hipp on 26 Nov 2017
  43. Empidonax sp. Empidonax sp.
    Last observed by Adam Weiner on 15 May 2021
  44. yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)
    Last observed by Beverly Reynolds on 16 Jun 2023
  45. vireo sp. Vireo sp.
    Last observed by Alexander Feinberg on 19 Apr 2023
  46. crow/raven sp. Corvus sp.
    Last observed by Anonymous eBirder on 31 Mar 2022
  47. swallow sp. Hirundinidae sp.
    Last observed by Dan King on 21 Apr 2024
  48. wren sp. Troglodytidae sp.
    Last observed by Jay Desgrosellier on 8 Jan 2022
  49. new world sparrow sp. Passerellidae sp.
    Last observed by Paul Mulholland on 3 Mar 2023
  50. blackbird sp. Icteridae sp.
    Last observed by Matt Sadowski on 22 Jun 2016
  51. passerine sp. Passeriformes sp.
    Last observed by Joshua Jaeger on 22 Apr 2016
  52. bird sp. Aves sp.
    Last observed by Sean Buchanan on 11 Sep 2022